With regard to eBay it has it's perfect, good, well used and don't touch with a 10 foot barge pole! I have bought off the site and had the watch serviced by our esteemed forumer Leo, who did a first class job.But this is one for the 10 foot category as some parts are clearly not right!

P.S. just noticed a difference in the crown in my picture vs Tony's. Is there a difference among some? Or is this an optical illusion.

Bill, you mean the fact that Tony's has a cylindrical crown, whereas the one on your pic has an onion crown?Well, I am certainly not an expert, my according to some researches I did there were different models. The one with the cylindrical crown is the older version, I think there were only 1000 of this one built.The versions thereafter had an onion crown, like the one in your picture.

P.S. just noticed a difference in the crown in my picture vs Tony's. Is there a difference among some? Or is this an optical illusion.

Bill, you mean the fact that Tony's has a cylindrical crown, whereas the one on your pic has an onion crown?Well, I am certainly not an expert, my according to some researches I did there were different models. The one with the cylindrical crown is the older version, I think there were only 1000 of this one built.The versions thereafter had an onion crown, like the one in your picture.

Experts, please correct me if I am wrong.

I am certainly no expert, but I have been building a database of extant B-Uhr and, so far, have already indentified 40. It is a work in progress.From this search I have concluded that IWC manufactured 1005 B-Uhr, 1000 delivered at the same time to Siegfried Heindorf, Berlin in 1940, for the Reichs-Luftfahrtministerium for the use of the Luftwaffe bomber squadrons for astro-navigation, and 5 for tests which remained at IWC.The conical and cylindrical crowns appear randomly on B-Uhr with lower and higher case numbers, which suggest that cylindical crowns are probably the result of maintenance. My personal theory is that the conical crown was prone to separation, and was replaced by the cylindrical crown.I've shared this, and other interesting facts and data, with real B-Uhr experts who either already knew it, or agreed with it.

I used to think it was clever to confuse comedy with tragedy. Now I wish I could distinguish them. John le Carré